Just got some CE3s. I vape 100% VG - but it is not thick - it is JC - so works pretty good with CE2s and CE4s. CE3s are great cause there is very little leakage - note I said little - folks that claim it dont leak at all must have a different brand than mine. I got mine from Discount vapers. After one fill, talk about nasty dry hits. Took it apart and cleaned and dry burned it....and was off to vaping again. Great vapor production. Muted taste. No throat hit. Very very cold hit. Now all of this could be the juice I vape (JC Tennessee - 100% VG). Used it on VV too - bottom coils like everyone has said before - vape is not warm enough. Maybe great for menthol vapers.....just not for me - goona stick to CE2s.......my 2 cents...